SA85A-E3/73 Circuit Protection

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Transient Voltage Suppressor (TVS) Diodes are electrical components that protect against voltage transients. There are a variety of applications and different types of TVS Diodes, but the one we will discuss is the SA85A-E3/73. This diode can be used to protect circuits from spikes and other types of high-voltage transients.

The SA85A-E3/73 is a unidirectional, one-way protection diode designed for low power consumption applications. It has a peak pulse power rating of 500 W and a breakdown voltage of 5.5V. This diode has a low maximum junction capacitance of 8.5 pF and is well suited for use in data communications systems and other high frequency applications. Additionally, this diode is extremely temperature stable, with a temperature coefficient of 0.04% per °C. In terms of its power dissipation and maximum peak pulse power, the SA85A-E3/73 is considered one of the most cost-effective and reliable voltage protection diodes available.

In terms of its application field, the SA85A-E3/73 diode can be used to protect circuits from high voltage transients, such as ElectroStatic Discharge (ESD) and Surge currents. ESD is the transfer of electrical current through the air between two objects, and is usually caused by a charge imbalance of the objects in question. A surge is an almost instantaneous increase in voltage that is caused by an event such as a power outage, electrical short circuit, lightning strike, or other phenomena. The SA85A-E3/73 is capable of dissipating both ESD and surge transients before they cause damage to a circuit or device.

In terms of its working principle, the SA85A-E3/73 works in the same way as a zener diode, by clamping the voltage to a certain level. The SA85A-E3/73 has a reverse breakdown voltage of 5.5V, and when the voltage exceeds this level, it starts to conduct, which clamp the voltage to 5.5V. This type of diode also acts as a short circuit for high-frequency transients, effectively protecting the circuit or device from surges and spikes.

The SA85A-E3/73 is a reliable and cost-effective diode for voltage protection applications. It is capable of dissipating ESD and surges before they can cause damage to a circuit, and its low power consumption makes it well suited for use in various types of data communication systems. Its low capacitance and temperature coefficient make it a highly stable device that is well suited for high-frequency applications as well.

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